Apparatus for printing late news in newspaper printing machines



E. W. SMITH APPARATUS FOR-PRINTING LATE NEWS IN NEWSPAPER PRINTING MACHINES Filed March 24. 1927 5 Sheets-Shea l I nvenfor Dec. 27, 192i. 4

E. w. SMITH APPARATUS FOR PRINTING LATE NEWS IN NEWSPAPER PRINTING MACHINES Filed March 24. 1927 5 Sheets-Sheet 2 Fig.6. I

. 1 I RnxTa WH /X I v I Inventor lz/jmdfi Attorney Dec. 27, 1927.

' E. W. SMITH APPARATUS FOR PRINTING LATE NEWS IN NEWSPAPER PRINTING MACHINES Filed March 24. 1927 5 Sheets-Sheet 5 E. W. sMiTH APPARATUS FOR PRINTING LATE NEWS IN NEWSPAPER PRINTING MACHINES Dec. 27, 1927. 1,654,058

Filed March 24. 1927 5 Sheets-$heet 4.

Dec. 27, 1927.

E. W. SMITH APPARATUS FOR PRINTING LATE NEWS IN NEWSPAPER PRINTING MACHINES Filed March 24. 1927 5 Sheets-Sheet 5 Inventor (i M j/IuZ/L Attorney.

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imii'ioosm'ras EDINBURGIL ECUILAIQ'D, A: S, LIMITED, U WATER LA'Jl lEL,

itllflUS 11 7011. IE'IHJIQPIING LATE IN ONE-HALF TO B. W.

iitjt llll IltiiG MAGHINES.

implication filed March 24, 1927, Serial No, 177,9!Zi3, and iii Great Britain 'Deooiiihox' it,

This invention i'olo'los to late news print log mechanism to? HGWSPflIJB'K printing pro '5, and has goo will LllTlODg lts o ogoots to improve the minim-notion and opoi-ation of trio oi'io with tho other.

llio invention l'i'ii'thoi' ooiii iiisos tho loo- Uiii f'lf to tho Ell'iililli lit'liz lllg Lll'tt 'iiigias, iii ugh l igoi'o l 'i'opi-visi-ziiti-a :i riootioiiail elevation of the into oowii iioohziiiii-iii'i provided no cording to tho ioi'ontion.

l i g 'om l is it phiii oori'osponllino; to Figl'llit 1.

t to it iloliiil ti'oiioi oi'oo section on :zho smile l igoi'o 3 i (lotziil llill'lllll longitudinal i section oi? t io ohilioh.

l" iii-o tlio 'i'oi imz'itic Figures: il, 4; and h, olwntioos unt l pliui roopoctivoly ilii oti'iitlng the operation (it tho lJlilli'lDQQ and l1ltBllO L'l I-- ioo coins.

l io'iii'o 5 is an oiiloi'gg'ol plan illustrating tho i-oiioti'oi'iion zmo upfii'ilijlOll of the oliitoh.

l igjiiii'oi (S and ll o'i'o detail i'ioii's of tho clutch gjgoziim and Figures 'i mill 7 mo clotoil Vioii's ol the spring (zitlh for retaining tho box oi liiuloi's in tho operative position.

in tho :iccooipm'iying (li'mi ii'igs a iiytho llllplfit'F-iml o liocloiz, Z) until o the boil o i lin' tlfiii; and o" the inking; iii'raiiooioont. 'lho iiiipiioii cylmilor it IS sot "\i'ithiii lllitll hooiingo, hut tho to i- 'liotloi' shafts 5 mi l are both oo'oriotl iii liooi'inggo inoiiiito il in the sliding blocks 6 ooo oi? w FElJOWll in l igiito 2, tho hloclzs o hoiii 0 move vortlzflly Within }lll()(l8l'(-ll'll1l0d lll'ill llfho weight of tho mosh i. miri'ioiil by sslicli lg: hlool'cs (2 is balanced by; tho opting-i2: 0 :(rl ji' ed by not and tho izalicliog blocks a oi'o ll'lOVLBtl vortioalhy by ioozziio oil? tho tififfil'll l'lfi shaft woi'ltii'ig in the slot a in tl'io oo'oil'o of tin: oliilif lIJlOOlt'S e, iiiiiii, oaii'i'ioiil in heorings in tho l'iGil 'lt'i'omos f and notozitotl h) om hoi'icllo o. Tho sliding lgiloclito o are lioliil in l'lltli' lopmoot :lllfl lowermost position to spootivoly zioniijist tho stops (2 and 6 by tho iii-lion or he sp ing a on the crank i2 connoototl to tho ooooiitiio ohzi'lit 0", tho sliding :t'i'ziioo hoing shown in :i r-outml pooitioii in ,l' lgill'o El. ".lho hox oylii'itioir shoillis F) 14ml 0" :H:' 'oi'i'ioil iii ii-ocootf- Li 72* M'Hl o for the puoposo of iniiividiiz'il :i :ositoioiit :loiiiopirosoioio, mid theoo oocoiiti'io hearings 211'0 IOClKULl in plzioo by loi o'i? nuts 5 mill c5 t'BjH'GStlllS tho inking mochaniolii of which (Z and (Z who tho rollers oonvo ing ink to tho typo ninttoi' t'ill'lletl by hot: o gliir- (lGl'S i) oml o. 'llho hox cylinders i) out] 0 :1 to iiiovnhle litter-ally along the boil: oyliijii'loi' sharlits 71 and zllltl tho lizilotl keys (of whit-h one only 0* is shown) and are hold in :i pio- (lotorrninoil lritoi'ol position by llliiltll ol it Fipllllgf catch ropi'oooiltoil hy o- (Figiiio l) ogg oii'i. 1 th o'lop coll-om which are also no pzihlo oil oi'iljuol'l'i'iont laterally zinil o i which one only a is HllOWl]. The opting ozi'tcli o (l igul'os '7 and T) iii-my comprise for ox- :i-inplo a part i'otzitohl'y ii'iou'otocl All oiio will of the box cylinder (2 upon. :i horizaol'itiil axis and lowing a hiioillo 01' lCVEl 2-- at its out- Wni'dly elll'eniillllg omfl :lor its; {lPQiillllfllL The i'ototahly lllol'lllt'dtl poi-t hohl in its pooition in the ho); cyliiitloihy any suitzlhlo iiiioiuis, tor oxuii'iplo. mi :iniiolni' groove 0 may he provided iuljnooiit tho inner (and o l? the port and a screw oitho lilo: may ho insoi'toil through El hole in tho lJUT; oylimlor: o in such lllilllllef no to engage in tho zmiiulzii' groove (1 iinil prevent axial movoiiioiil' oi the i-otoliihle pi. it 0 with i'o:s )oot to tho hon cylinder (1. In at position zuljocoiit tho onil of the ho oyliiliiloi' C the i'otiitzihlo port is pi'ijwiilecl with o com a which is zirlopl'ol Eli) I on the rotatable part being turned, to

engage within a transverse slot 0 in the key 0 the rotatable part 0 being maintained in the locked position by means of a leaf spring 0 mounted upon the box cylinder 0 and adapted to engage with a fiat surface 0 provided on the cam 0 referred to; A spring catch is similarly provided for the box cylinder b. By this means the box 7 cylinders b and 0 may be drawn to the side safely away from the other rotating parts fort-he purpose of changing boxes. It will then be seen that by rotating the handle 6 through, say, a third of a revolution, the slidingframes e will be caused to move either upwards or downwards in the fixed frames f, carrying with them the box cylinder shafts b and 0 thus bringing either of the box cylinders b and 0 into, or out of, contact with both the impression cylinder a and the inking rollers d and (P. On the end of the box cylinder shafts b and c a clutch mechanism is mounted one of which is shown in. Figure 3. This clutch mechanism is the same on both shafts.

As shown in Figure 25 the box cylinder shaft 0 is mounted in an eccentric bearing 0 on the end of which the gear a is free to revolve, the gear 0 beingalways in mesh with the gear a on the end of the impression cylinder shaft a (as shown in Figures 1 and 2). The gear 0 is provided with conical clutch face 0 and the ball thrust washer 0 is provided to take the thrust of the clutch between the gear 0 and the bearing 0 On the shaft 0 and free to slide on the 'key 0 is mounted the male portion of the 'mountedon the boss of the clutch c is a disc 0 carrying a pin 0 and also provided with an annular groove c" cut in the periphery of its boss. The disc 0 is free to move laterally along the boss of the clutch a and the pin 0 slides through a hole in the face of the clutch c and is free to engage with the hole 0 in the face of the clutch gear 0 when it comes opposite to it. From this it will be seen that if the clutch c be withdrawn from the clutch gear 0 that the clutch gear 0 will continue to revolve completely out of contact with any part of the shaft 0 or any part carried the shaft 0 and the shaft 0 will come to rest. It will also be seen that if the pin 0 be inserted in the hole 0 that the gear 0 and the shaft 0 will always be in the same relative position to each other.

Figures 6 and 6 are detail views of the clutch gear 0 on the inner face of which is cut a concentric groove 0 having the same radius from the centre of the shaft 0 as the pin 0 and having a width the same or slightly greater than the diameter of the pin 0 The groove 0 starts at the point X having no depth but; progresses evenly in the form of a. spiral until it reaches a depth of, say where it runs into the hole 0.

Carried in hearings in the fixed frames f are the two clutch actuating ram shafts g and g of which the upper one y is shown in Figures 4 and 5. 'lhese cam shafts are respectively provided the same for both the box cylinder shafts Q0 and v and description of one only is given.

In Figure 5 in which the clutch c and the pin 0 are in the disengageil position, 9 is the cam shaft, bearing on its end the cams and g which actuate the levers g and g by means of the pins, or runners, and 9' running on their cam faces. The other end of the levers g and g are provided with forks carrying the runners, or pads, 7 and g" which engage with the annular grooves 0 and c of the clutch c and the pin carrying disc 0 respectively. It will be seen in Figure 5 that the pin, or runner g is held against the cum 1 by the pressure of the spring 9 except when the male clutch c is up to its work. It will further be seen that: if the cam g be rotated, the cam face is capable of witlnlrawing or letting in the male clutch c. and thus disengaging, or engaging it with the clutch gear 0 The cam is provided with a raised part g by which the clutch 0" may be inomentarily withdrawn to permit the pin a to travel round the groove c into the hole 0 Thus it will he understood that the shape of the cam g is such that the clutch c is gradually engaged with the clutch 0 while the cam is rotated through somewhat less than half revolution whereupon the runner g engages with the outwardly inclined surface of the raised part whereby on the cam having completed a half revolution the clutch c" in disengaged from the clutch 0. As the cam is further rotated and the runner engages w ith the inwardly inclined surface of the raised part of the cam the clutch c is once more engaged with the clutch c and remuiin: engaged therewith dur ng the remainder of the rotation of the cam The spring y acting on the lever g keeps the pin, or runner up against the face A of the cam g and tends to more the pin carrying disc 0 towards the mal clutch c and the clutch gear 0, and it will be seen that if the cam 5 is rotated, the pin carrying disc 0 will move towards the male rlufch 1:" and will carry the pin 0 forward until it is stopped by the inner face of the clutch gear 0. The cam face B of the cam g" is lio so formed that it does not act upon the runner 9 until the rotation of the cam shaft 7- is nearing con'ipletion so that the runner g is not positively actuated by the cam face l3 until the pin is in engagenient with the hole 0 (hi the other end oi the shaft g" as shown in Figures 4-, at and i are two cams h and li These cams are both mounted on the one shaft as shown in the plan, but although they are shown separately in front elevation for the sake of simplicity, it will be understood that they lunction together and simultaneously. The parts in Figure t are shown in the Josition in which the brake has just been released at the beginning of it in the cam [t and the brake shoe It is thus pressed into contact with the hand Wheel it by the spring a but in the rotalion oi? the cam sha'lt in a (ilOCilUV M-ELllr roction the runner it is moved inwardly by the cam against the face of which it is pressed. The brake shoe it may be released by hand pressure on the handle It" when desired. The cam 72, (mounted upon the same sharl t) when rotated actuates the bar 1 2 by means or the pin or runner it" and withdraws the end of the bar it, which is sup ported by the groove 71/ in the lined frame 7, from the slot it in the sliding block 6.

It will thus be seen that when the bar it is withdrawnaud the slot a is not in line with it owing to the sliding block 0 being in the lower position it is not possible to rolalio the cam shaft carrying the cams hand 71? and the clutch actuating cams g, g until the sliding block 6 is in its correct position.

The operation is as follower-Let it be assumed that the press is running and the boxes on the lower box cylinder Z) are running in contact with the impression cylinder a and the inl: roller (Z the upper box cylindcr and shaft 0 and c are stationary and the box cylinder 0 drawn to the side along the key (1 shown in Figure 1*. A box is inserted in the box cylinder 0 and the cylinder pushed along the shaft 0 and the key c against the stopc which determines its correct lateral POSl'lLlOI]. The cam shait is then rotated (m'eilerably tl'irough reduc tion gear not shown, or it may be mechanically operated from the macl'iiine). The brake shoe Ft is .lirst released by the action of the cam 71,2 and the cam 7 then allows the male clutch c to engage slowly with. the clutch gear 0 and at the same time the cam 9 allows the pin carrying disc 0 to travel forward the same distance with the male clutch c". As soon as engagement in ellcctcd between the male clutch c and the clutch gear c the can] y lurther releases the pin carrying disc c which carired l'orwarlil by the pressure of the spring 5 andthis presses the pin 0 against the concentric spiral groove 0 in the face of the clutch gear 0 at wliatcver point is happens to he opposite to. The com g then withdraws the male clutch c momentarily and allo the clutch gear c to overtake the box cyl inder shaft with the result that the pin 0 will travel around the concentric spiral groove 0 until it reaches the hole 0" when it lillliQF-JUP the drive. The pin c then pushed into the hole c by the action of the cam face 13 on the am and the rain again allows the male clutch c" to engage with the clutch gear 0. hen the pin 6 and the clutrh c are home the cam it with draws the bar 72" from the slot it thus leaving the sliding blocl: c Free to be moved. The box cylinder u now running at correct speed and in register with the impression cylinder a, the handle c is moved through, say, a third oil? a revolution. This causes the eccentric i-rlia'lt c to rotate in the slots c (llIgure id) and will move the sliding blocks (lmvnn'ards until they come to rest agaimt the stops c. This operation is assistcd and the final position sustained by the spring a acting on the crank c". The bones on the box cylinder 0 will now be in contact with the .in'ipresaion cylinder a and the inking roller (1 and the boxes on the box cylinder Z will be out 0] contact with. the impression cylinder at and the inking roller (P. The box cylinder shalt b can how be broughtto rest by rotatim); the cam shalt g in the opposite direction when. the se quence of operations as outlined above on cam shalt 9 will be :revcrsedi The box cylinder L may then be drawn to the side and the box or boxes removed and it is left in this position ready for the insertion of any future boxes that might be required.

In. Figure l the box cylinder sha'lt c is shown in its working position in which position the boxes are running in contact with the innpression cylinder and billing roller, and it will be seen that it is not possible to rotate the cam shalt g owing to the end of the bar it not being in alignment with the slot it in the sliding blocli c, therefore it not possible to actuate the clutch mechanism on the end ot box cylinder sha'lt c and so bring the shatt to rest while it rcmains in contact with the impression cyliir der and the inking roller. ll the sliding block 0 is moved upwards and ln'onght to rest against the stops (Figure 2) then I the slot h comes into alignment with the bar it and the cam shaft 9 can then be rotated, and the clutch mechanism on the end of the box cylinder shaft 0 actuated rest, the bar h will be projected by the cam it into the slot It in the sliding block e-andthe sliding block 6 is locked in this position until the cam shaft g is again rotated to bring the box cylinder shaft 0 into motion. This means it is impossible to move the box cylinder 0 into contact with the impression cylinder a and the inking roller d until the box cylinder shaft 0 is running at its proper speed and is in register. It. must be understood that all the mechanism'in connection 'with the box cylinder shaft 0 and the cam shaft 9 described above is exactly duplicated on the box cylindershaft b and the cam shaft 9.

It will thus be understood that it is impossible to bring any printin surfaces into contact unless they are running at the correct speed and in register, and that it is impossible to disconnect the mechanism driving the printing surfaces while they are in contact. i

It will furthermore be understood that the handle it on the brake lever h (Figure at) is provided to enable the box cylinder shaft to be moved by hand after it has come to rest, so as to turn the box cylinder into the most convenient position for the replacing of boxes.

It Will be understood that the invention isnot limited to the actual construction or to the combination of the features of the construction hereinbefore described-as the operations described may bGCttl'llGCl out in constructions considerably different without departing from the invention.

I claim: 1. Late news printing mechanism for 'newspaper printing presses, comprising an the" control element when theclutch is engaged, substantially as hereinbefore descr bed.

2. Late news printing mechanism for news )a )er rintin resses. comnisin an D I D impression cylinder, a shaft adjustable towards and away from the said impression cylinder, 9. box cylinder upon the said shaft,

gearing between the impression cylinder and the box cylinder shaft, a clutch between the box cylinder shaft and gear thereon for engaging the gear iii one determined position, a control element determining the operation of the clutch, a locking device applied to the box cylinder shaft to lock it in the outer position of iuljnstment, and means upon the control element for releasing the locking device when the clutch has been engaged, substantially as hereinbefore described.

Late news printing mechanism for newspaper printing presses, comprising an impression cylinder, frame members in which said impression cylinder is carried, slideways in said frame members, bearings within said slidcways, a box cylinder shaft mounted in said bearings, means for adjusting said bearings in said slideways, a gear wheel secured to and co-axial with said impression cylinder, a gear wheel loose upon said box cylinder shaft, a box cylinder up on said box cylinder shaft, a positive clutch engaging the box cylinder shaft with the gear wheel thereon in one determined position, a cam shaft carried in said frame members, a cam upon said cam shaft for operating said clutch, a locking device upon said frame members locking the bearings of the box cylinder shaft in the outer position, and a cam upon said cam shaft for releasing said locking device when the clutch is engaged, substantially as hereinbefore described.

l. Late news printing mechanism for newspaper printing presses, comprising an impression cylinder and a box cylinder, bearings in which cylinders are mounted, said bearings being relatively adjustable, gearing between the two cylinders, a clutch for disengaging the box cylinder from the gearing, said clutch engaging in one position of the cylinder only, a rotatable cam shaft parallel with the impression cylinder and the box cylinder, a cam upon said cam shaft, a lever engaging and operating the clutch, the said lever being controlled by the said cam, a recess in one bearing of the box cylinder, a cam upon said caiii shaft, a longitudinally movable member engaging said cam and operated thereby and entering said recess when the box cylinder is away from the impression cylinder, and means for rotating the cam shaft to engage the clutch and disengage the locking device, substantially as hereinbefore described.

5. Late news printing mechanism for newspaper printing presscs. comprising an impression cylinder. a shaft adjustable towards and away from the said in'ipression cylinder. a box cylinder upon the said shaft, a gear wheel in fixed relation with the impression cylinder, a gear wheel loosely mounted upon the box cylinder shaft and engaging the gen r wheel of the impression cylinder, a friction loo till

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clutch slidably ll'lOlllll'fld upon the box cylinder shaft and engaging the gear wheel thcreon, a positive clutch member also slidably mounted upon the box cylinder shaft and engaging: the gear wheel thereon, acontrol element d-etorn'iining the operation of the two clutches in order, a locking device applied to the box cylinder shaft to lock it in the outer position of adjustment, and means in connection with the control element for re leasing the locking device when the positive clutch has been engaged, substantially as hereinbetore described.

6. Late news printing mechanism for newspaper printing presses, comprising an impression cylinder, a shaft adjustable towards and. away from the said impression cylinder, a box cylinder upon the said shaft, a gear wheel in fixed relation with the impression cylinder, a gear wheel loosely mounted upon the box cylindershaft and engaging with the gear wheel. of the impression cylindcr, a friction clutch member slidably mounted upon the box cylinder shaft and engaging the gear wheel thereon, a posi tive clutch member also slidably mounted upon the box cylinder shaft and engaging the gear wheel thereon, a cam shaft parallel with the said cylinders, a cam upon the said cam shaft, a lever engaging and operating the h'iction clutch member, the said lever being cimtrolled by the said cam, a second cam upon the said cam shaft, a second lever engaging and o 'ierating the positive clutch member, the said lever being controlled by the saidsecond cam, a locking device applied to the box cylii'idor shaft to lock it in the outer position of adjustment, and a cam upon the cam shaft for the control of the said locking; device, serving to release the locking; device alter the clutches have been engaged, substantially as hereinbefore de scribed 7. Late news printing mechanism for newspaper printing presses, comprising an impression cylinder, frame members in which said impression cylinder is carried, elideways in said frame members, bearings within said slideways, a fixed cylinder shaft mounted in said bearings, means for adjusting-r said hearings in said slideways, a gear wheel secured to and co-axial with said impression cylinder, a gear wheel loosely mounted upon said boxcylinder shaft, a box cylinder upon said box cylinder shaft, a 'lr1ction clutch member slidably mounted upon the box cylinder shaft to engage the gear wheel thereon, a positive clutch member also slidably mounted upon the box cylinder shaft to engage the gear wheel thereon, a rotatable cam shaft parallel with the impression cylinder, two came upon the said cam ehattt, two lovers respectively engaging the said cams and operating respectively the fricti i el'titoh men'iber and the. positive clutch member, a recess in one bearing of the box cylinder shaft, a cam upon the said cam shaft, a longitudinally movable lUElTllJGl. engaging the said cam and operated thereby to outer the recess when the box cylinder shirt is in the position away from the inn pression cylinder, and means for rotating the cam shactt for the engagement ot the clutches and the disengagement of the 1011 gitudinally mo'nble men'lber, substantially as hcreinbctore described.

8. Late news printing mechanisn'i for newspaper printing presses, comprising an impression cylinder, a shaft adjustable towards and away from the said impression cylinder, a box cylinder upon the said shaft, a gear wheel in fixed relation with the im pression cylinder, at gee r wheel loosely mounted upon the box cyl nder shaft and engaging the gear wheel of. the imp ssion cylinderyii friction clutch member slidably mounted upon the box cylinder shaft to engage the {rear wheel thereon. a disc member slidablv inoiiluicd upon the friction clutch member, a pm carried by the said disc member and slidably fitting a hole in the friction clutch member, a groove of increasing depth formed in the face o f: the gear wheel upon the box cylind shaft adjacent the friction clutch member, a hole at the end of the said groove to receive the pin. upon the disc memher, a cam shaft carried in the said frame n cn'ibers, two cams upon the said cam shaft, two lovers respectively engaging the said cams and serving respectively to operate the triction clutch nien'iber and the disc mem her, a recess in one of the bearings of the box cylinder shaft, a cam upon the cam shaft, a longitudinally movable member on traded with the said. cam and adapted to entei' the recess in the said bearing, and means to effect the rotation of the can] shaft "to engage the clutches and disengage the li'mgitudinallv' movable member in sequence, substantially as hereinbetore described. I

9. Late news pidntiug mechanism for newspaper printing presses, comprising an impression cylinder, frame members in which sa d impression cylinder is carried, slidcways in said frame members, two sets of coin nected bearings mounted in said slidewavs, two box cylinder shafts included in said sets of bearings, box. cylinders mounted respectively upon the said two box cylinder shafts.

and means for adjusting the said bearings in the said slideways to bring; the box cylinder upon one of the shafts into engagement with the impression cylinder and thebox' cylinder on the other box cylinder shaft out of engagement with the iinprei ion cylinder, substantially as herei nbeforo described.

10. Late news printing mechanisn'i For newspaper printing presses, comprising an impression cylinder, frame members in which said impression cylini carried,

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bearings, and means for rotating said eccentric shaft for the adjustment of the said hearings in the slideways to bring the box cylinder upon one of the shafts into engagement with the impression cylinder and the box cylinder on the other box cylinder shaft out of engagement with the impression cylinder, substantially as hereinbefore described.

11. Late'news printing mechanism for newspaperv printing presses, comprising an impression cylinder, frame members in whiehsaid impression cylinder is carried, slidewaysin said frame members, two sets of connected bearings mounted in said slideways, two box cylinder shafts mounted in said sets of bearings, box cylinders mounted respectively {upon the said two box cylinder shafts, an eccentric shaft mounted in said frame members and engaging the connected bearings, means for rotating said eccentric shaft for the adjustment of the said bearings in the slideways to bring the box cylinder upon one of the shafts into engagement with the impression cylinder and the box cylinder on the other box cylinder shaft out of engagement with the impression cylinder, a crank upon said eccentric shaft, a crank pin upon said crank, a rod extending from said crank pin transversely'to the axis of the said eccentric shaft, an anchorage upon one of the frame members for the outer end of the said rod, a collar upon the said rod and a compression spring upon the said rod between the anchorage and the collar, substantially as hereinbefore described 12. Late news printing mechanism for newspaper printing presses. comprising an impression cylinder, frame members in which said impression cylinder is carried.

' slideways in said frame members, two sets of connected bearings mounted in said slideways, two box cylinder shafts mounted in saidsets of bearings, box cylinders mounted respectively upon the said two box cylinder shafts, means for adjusting the said bearings in the said slideways to bring the box cylinder upon one of the shafts into engagementjwith the impression cylinder and the box cylinder on the other box cylinder shaft out of engagement with the impression cylinder, gearing between the impression cylinder and the respective box cylinder shafts, clutches between the respective box cylinder shafts and the gear wheels thereon for engaging the gear wheels in one determined I position, a control element in respect of each ox cylinder shaft determining the operation ofthe corresponding clutch. a locking device applied to each box cylinder shaft to lock it in the outer position of adjustment and to prevent disengagement of the clutch in the inner position of adustment, and means upon each control element for releasing the corresponding locking device when the corresponding clutch has been engaged, substantially as hereinbefore described.

13. Late news printing mechanism for newspaper printing presses. comprising an impression cylinder, a shaft adjustable towards and away from the said impression cylinder, a box cylinder slidable upon the said shaft, a securing device mounted upon said box cylinder to lock the same in position upon the box cylinder shaft, gearing between the impression cylinder and the box cylinder shaft, a clutch between the box cylinder shaft and the gear wheel thereon for engaging the gear wheel in one determined position, a control element determining the operation of the clutch. a locking device applied to the box cylinder shaft to lock it in the outer position of adjustment. and means upon the control element for releasing the locking device when the clutch has been engaged, substantially as hereinbefore described.

14. Late news printing mechanism for newspaper printing presses. comprising an impression cylinder, a shaft adjustable towards and away from the said impression cylinder, a longitudinal feather upon the said shaft, a box cylinder slidable upon the said shaft and upon the said feather, a rotatable catch member mounted upon the said box cylinder, recesses in said feather in which the rotatable catch member may engage, gearing between the impression cylinder and the box cylinder shaft. a. clutch between the box cylinder shaft and the gear wheel thereon for engaging the gear wheel in one determined position. a control ele ment determining the operation of the clutch. a locking device applied to the box cylinder shaft to lock it in the outer position of adjustment, and means upon the control element for releasing the locking device when the clutch has been engaged. substantially as hereinbefore described.

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15. Late news printing mechanism for newspaper printing presses. comprising an impression cylinder. frame members in which said impression cylinder is carried, slideways in said frame members. hearing within said slideways. a box cylinder shaft mounted in said bearings. means for adjust ing said hearings in said slidcwavs. a gear wheel secured to and co-axial with said inipression cylinder, :1 gear wheel loose upon said box cylinder shaft. :1 box cylinder upon said box cylinder shaft, :1, positive clutch engaging the box cylinder shaft with the gear wheel thereon in one determined position, a cam shaft; carried in said frame meinhers, a (rain upon said earn shaft or operating said clutch, a locking device upon said frame members looking the bearings of the box cylinder shaft in the outer position, a, can], upon said cam shaft for releasing said locking device when the clutch is engaged,

:1 disc upon said box ey1i nder shaft, :1 cam upon said emu shaft, a, lever engaging said. cam, and :1 brake shoe carried by said lever 10 for engagement with said. disc, substantially as hereinbetfore dGSClibQd.

EDGAR \VILTON SMITH. 

